Burglar-alarm



(N0 Model.)

P. H. LINDSEY 8v 0. H. SQUIRES. BURGLAR ALARM.

1 Io..528,953. Patehted Nov. 13, 1894-.

Fig.2

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Witnesses. 35% M JM, Inventors.

NITE: STATES PATENT FFICE.

PETER H. LINDSEY AND CHARLES H. SQUIRES, OF LOCKPORT, NEW YORK.

BU RG LAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 528,953, dated November13, 1894.

Application filed March 15, 1894.

To all whom it may concern.-

Be it known that we, PETER H. LINDSEY and CHARLES H. SQUIRES, citizensof the United States, residing at Lockport, in the county of Niagara andState of New York, have invented certain new and useful Improvements inDoor-Alarms, of which the following is a specification.

Our invention relates to a combined alarm and lighting device for doorsand will be fully andclearlyhereinafter described and claimed, referencebeing had to the accompanying drawings, in which- Figure 1, is a frontelevation of a door having our invention connected therewith. Fig. 2 isan enlarged sectional elevation, cutting through the device and aportion of a door and casing, in or about line a a, Fig. 1. Fig. 3, is atop view of that portion of the device which is attached to the doorcasing.

Referring to the drawings in detail, 1represents an ordinary panel door.

The door casing is represented by the numeral 2, made in the usual way,both the casing and door being shown for the purpose of illustrating ourinvention.

The object of our invention is to give an alarm and lightsimultaneously, and it consists of a cast iron or steel frame 3, havinga depression 4, (the object of which will appear farther on) and aforwardly projecting frame portion 5, at each end. Near the front of theside portions 5, is secured, in any suitable way, one or more wires 6'.These wires 6, are drawn sufficiently taut to give an alarm sound whenstruck or made to vibrate. This frame 3, is secured to the upper casing2, of the door by screws or other Well known means.

Below the wires 6, is securedby screws 14, or by other well known means,a'plate 8, having two projecting ears or side pieces 9 and 9*, betweenwhich is pivoted by pivots 10 and 11, a short arm 12. This arm 12vibrates easily on its pivots and is provided with a short downwardprojection 13.

On the plate 8, is secured by a rivet or screw 14:, a spring 15, whichkeeps the top of the arm 12, in its normal position or in toward thedoor. The arm 12, is made tapering, substantially as shown in Fig. 2,and is provided with a tapering sleeve 16.

17 represents an ordinary wax match which Serial No. 603,698. (Nomodel.)

is placed against the side of the arm 12, in a substantially uprightposition and then rigidly secured in place by the sleeve 16. The top end18, of the arm 12, is made sufficiently high to strike the wires 6, andcause them to vibrate when the door is opened and thereby give therequired alarm. The match being also secured so as to project up to nearthe top of the arm 12, is made to light by the friction of the wires 6,as it passes under them, striking against them as it passes.

The supporting frame attached to the casing 2,having the depression 4,leaves an opening between it and the easing into which an ornamentalplate, sign or motto, of any kind may be inserted, for instance, such aplateas shown in Fig. 1 and designated by the numeral 19.

The operation of the device is as follows: When the door is closed, thearm 12, is in substantially the position shown in Fig. 2, and is kept inthat position by a spring. A projection 20, prevents the top of the armfrom being forced in too far toward the door. If the door is now opened,(it is made to swing on hinges 21) the end of the match and the arm 12,will strike the wires as they pass un der and give an alarm and lightatthe same time. If desired the alarm wires may be made rough orcorrugated at the point where the match strikes them. When the door isclosed the top of the arm 12, comes against the wires 6, which causes itto turn on its pivots in the direction of the dotted lines 22, see Fig.2, until it leaves the last wire, when it is immediately brought to itsnormal position by the spring. It thereby passes in this di rection, (orwhen the door is being closed) without sounding the wires.

When it is desired to prevent the operation of the device all that isnecessary to do is to turn the arm into the position shown in Fig.

' 2, by the dotted lines 24, and when required it can instantly be putinto its operating position.

Two brackets may be used instead of the frame 3, said brackets beingattached directly to the door casing and the alarm wires attached to thebrackets.

We claim as our invention- In an alarm device, a support-ing frameconnected to the door casing and provided with a soundingwire, incombination with an alarm arm pivoted to a plate secured to the door,taneously when the door is opened, substanmeans substantially asdescribed for holding tially as described.

the arm with a yielding force in its normal PETER H. LINDSEY.

position and a friction match removably se- CHARLES H. SQUIRES. 5 curedto said arm, both being in position to Witnesses:

engage with the wire when moved pass it, JAMES SANGSTER,

whereby an alarm and light is given simul- HARRIET JOHNSON.

